Water-tube boiler.



' No. 832,590. .PATBNTED 001'. 9, 1906.

J. R. BROWN & K. PARK.

WATER TUBE BOILER.

APPLIOATION FILED JUNE 12, 1995.

WITNESSES INVENTORS rutnonms'pzrsns cm, wAsunyui'oN, nc.

UNITED STATES PATENT OFFICE.

JOHN ROWLAND BROWN AND KENNEDY PARK, OF MANSFIELD, OHIO.

WATER-TUBE BOILER.

Specification of Letters Patent.

Patented Oct.- 9, 1906.

Application filed June 12, 1905. Serial No. 264.773.

To all whom, it may concern.-

Be it known that we, JOHN ROWLAND BROWN and KENNEDY PARK, of Mansfield,

Richland county, Ohio, have invented a new ing drawings'fforming part of this specification, in which Figure 1 is a vertical longitudinal section of our improved boiler on the line I I of Fig. 2,

and Fig. 2 is a cross-section on the line H II of Fig.

Our invention relates to the class of boilers wherein front and rear headers are connected by inclined water-tubes, and is designed to provide an improved arrangement of baffling for a boiler of this type.

In the drawings, 2 represents the front headers, and 3 the rear headers, which are connected by the lower row of large tubes 4 and the upper clusters of smaller tubes 5. We have shown these smaller tubes as arranged in groups of four entering the ordinary sinuous headers at their front and rear ends. The grate-bars 6 preferably extend rearwardly a major portion of the length of the.

tubes, the firing-doors 7 being below the higher ends of the water-tubes. From the rear end of the boiler a horizontal baffle 8 extends forwardly and preferably over the lower row of tubes for a part of their length. This baffle is preferably composed of tiles or fire-brick fitting on and between the lower row of water-tubes and extending across the furnace. From the inner portion of this horizontal baflie extends a vertical baflle 9, which in the form shown has a central extension 10 projecting up tothe roof-baflie 11, which lies on the water-tubes 12, connecting the upper ends of the rear headers with the steam and water drum 13, The side portions of this baflie 9 are cut away at the sides of longitudinal baffles 14 14, which extend rearwardly from the baffle 9 to the back headers and downwardly for a portion of the depth of the bank of tubes. The roof-baiiie 11 is cut away at the rear of the baffle 9 through its central portion between the longitudinal baffles 14.

In the operation of the boiler the gases flow upwardly across all tubes of the boiler, thence pass rearwardly at the opposite outer sides of the baflies 14 and beneath the roof portions 11 11. They thence flow downwardly until they reach the lower ends of the baffles 14 and thence join and flow upwardly within the baffles 14 and through thecentral outlet in the roof of the outlet-flue.

The advantages of our invention result from the peculiar arrangement of the bafliing, which causes the gases to flow laterally in divided streams before they pass up to the outlet. The gases flow over water-tubes in all the passes, so that the heat is'well-extracted from them.

As to the particular arrangement of baffling shown and described, the boiler may be fired at either end and the transverse steam and water drum may be at either end or intermediate of the length of the boiler. This steam and water drum may also be longitudinal, if desired.

Many other variations may be made in the form and arrangement of the boiler without departing from our invention.

We claim 1. A water-tube boiler having front and rear headers connected by inclined watertubes, a horizontal bafliing extending from one end of the furnace for a portion of its length and located at the bottom of the series of tubes, a vertical cross-baffle extending from the inner portion of the lower horizontal baffle, the central portion of this vertical baflle extending to an upper horizontal roof, while its side portions are cut away, and longitudinal vertical baflies extendin from intermediate points of the cross-bafile to one end of the boiler and causing the gases to divide and flow downwardly on opposite sides and thence upwardly through the central portion of the tubes to the stack; substantially as described.

2. A water-tube boiler having front and rear headers connected by inclined watertubes, a horizontal baflie located at the bottom of the series of tubes and terminating short of one end thereof, a vertical transverse baffle extending upwardly from the inner end of the lower bafile, said cross-baflie having cut-away side portions with its central portion joined to a roof or cover, and longitudinal baffies extending from intermediate points of the cross-baffle to one end of the boiler and downwardly for a part of the depth of the water-tubes, the upper roofbaffle having a central outlet between the longitudinal baffles; substantially as described.

3. A water-tube boiler having front and rear headers connected by downwardly and rearwardly inclined tubes, a horizontal baffle extending from the rear end of the furnace forwardly for a part ofits length, a vertical cross-baflle extending upwardly from the lower baflle and having one or more outlets in its upper portion, and longitudinal baffles extending rearwardly from the cross-baffle to the rear ends of the tubes and downwardly for a part of the depth of the tubes, the roof having one or more outlets to allow the gases to flow to the stack; substantially as described.

4. A water-tube boiler having front and 7 rear headers connected by rearwardly and downwardly inclined tubes, a front steam and water drum having water-tubes leading to the upper ends of the rear headers, a roof over said tubes having a central rear outlet for the gases, a lower horizontal baflle extending from the rear ends of the tubes forwardly a part of their length, a vertical crossbaflie extending upwardly from the horizontal baffle having its central portion extending upwardly to the roof and its side portions cut away, and longitudinal baflles extending from intermediate points of the cross-baffle rearwardly and causing the gases to flow downwardly among the outer tubes and thence join and flow upwardly between the longitudinal baffles to the central rear roofopening; substantially as described.

In testimony whereof we have hereunto set our hands.

J. ROWLAND BROWN. KENNEDY PARK. Witnesses:

JOHN MILLER, H. M. CORWIN. 

